Home / 668,861,018.90-1,004,047,355.55-396,385,313.30

Finding the Fourth Proportional to 668,861,018.90, 1,004,047,355.55 and 396,385,313.30

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Solution

The fourth proportional to 668,861,018.90, 1,004,047,355.55 and 396,385,313.30 is: 595,025,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,018.90 : 1,004,047,355.55 = 396,385,313.30 : x
  2. Step 2: Convert to fraction form
    668,861,018.90/1,004,047,355.55 = 396,385,313.30/x
  3. Step 3: Cross multiply
    668,861,018.90x = 1,004,047,355.55 × 396,385,313.30
  4. Step 4: Simplify right side
    668,861,018.90x = 397,989,625,597,723,264
  5. Step 5: Solve for x
    x = 397,989,625,597,723,264/668,861,018.90
  6. Step 6: Final answer
    x = 595,025,893.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.